Housekeeping
- HW for next week: create a study guide outline for the final written
and practical exams (details in Google Classrom)
Learning objectives
- Follow SOPs to measure a vertical light profile, YSI parameters, and
secchi depth
- Collect water samples
- Follow SOPs to filter water samples for chl a and TSS
- Describe common sources of PAR, secchi, and YSI sampling error and
explain whether values would be over- or under-estimated
- Describe common sources of TSS and chl a sampling error and
explain whether values would be over- or under-estimated
Supplies & equipment
- dock lines
- field data sheets
- pencils
- clip boards
- LI-COR
- YSIs
- nalgene bottles
- secchi disks
- filtering gear (vacuum pump, manifold and filtering cup, forceps,
filters, foils, skinny sharpies, plastic baggie, DI bottles)
Procedures
- Filtering slides
- Calibrate YSIs
- Knot tying on the dock with dock lines
- Demo LI-COR, secchi, YSI, collecting water samples from the floating
dock
- Everyone: YSI measurements
- In River Center lab, demo filtering for TSS & chl
a
- One group go get a water sample and come back up to the lab to
filter
- One group go to the dock and measure secchi and collect a vertical
light profile with the LI-COR
- Switch!
- Enter data in data
spreadsheet